CVE-2026-41255

CKAN: CSRF exemption primed by anonymous requests

Published May 13, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, Access to the views via tokens or unauthenticated requests marked the endpoint as not requiring CSRF protection. The marking was a member variable in flask-wtf.csrf.CSRFProtect(), which was stored as a module level variable in the flask_app middleware. This API was never intended for request level changes, it is primarily a decorator for static configuration. An unauthenticated request could hit a protected endpoint, exempting it from CSRF protection for the life of the particular server process. (e.g. one worker of uwsgi). This vulnerability is fixed in 2.10.10 and 2.11.5.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-mcvf-jxcw-vj73 CKAN has CSRF exemption primed by anonymous requests
History
Type Values Removed Values Added
First Time appeared Okfn
Okfn ckan
CPEs cpe:2.3:a:okfn:ckan:*:*:*:*:*:*:*:*
Vendors & Products Okfn
Okfn ckan
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ckan
Ckan ckan
Vendors & Products Ckan
Ckan ckan
Type Values Removed Values Added
Description CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, Access to the views via tokens or unauthenticated requests marked the endpoint as not requiring CSRF protection. The marking was a member variable in flask-wtf.csrf.CSRFProtect(), which was stored as a module level variable in the flask_app middleware. This API was never intended for request level changes, it is primarily a decorator for static configuration. An unauthenticated request could hit a protected endpoint, exempting it from CSRF protection for the life of the particular server process. (e.g. one worker of uwsgi). This vulnerability is fixed in 2.10.10 and 2.11.5.
Title CKAN: CSRF exemption primed by anonymous requests
Weaknesses CWE-352
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 14, 2026, 12:44 PM
Reserved
Apr 18, 2026, 2:01 PM
Status
Analyzed
Published
May 13, 2026, 7:17 PM
Modified
Nov 11, 2026, 8:10 PM